Quick answers
- Does Ruben D. Boyajian accept Medicare assignment?
- Yes. Medicare's clinician data says Ruben D. Boyajian accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Ruben D. Boyajian see?
- In 2024, CMS data shows 218 Original Medicare patients and 370 services for Ruben D. Boyajian. This counts Original Medicare only and measures volume, not quality.
- What is Ruben D. Boyajian's NPI number?
- 1912917188. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Ruben D. Boyajian, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 218 |
|---|---|
| Services billed to Medicare | 370 |
| Different services or procedures | 50 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)65 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)38 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)31 services
- Biopsy of large bowel using a flexible endoscope (45380)23 services
- Biopsy of breast and placement of locating device using ultrasound, first growth (19083)21 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol74%
- Arthritis43%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)42%
- Diabetes27%
- Anxiety27%
Hospitals where Ruben D. Boyajian works
Medicare's Facility Affiliation Data lists Ruben D. Boyajian at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- St Anthonys Memorial HospitalEffingham, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140032
Practice locations
Addresses where Ruben D. Boyajian is enrolled with Medicare (CMS data updated October 2, 2026).
- 900 W Temple AveEffingham, IL 62401 (217) 540‑2350
Group practices
Medicare enrollment lists Ruben D. Boyajian as a member of this group (CMS data updated October 2, 2026).
- HSHS Medical Group Inc219 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in HSHS Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1970 (56 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912917188 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians